@damewocane I'm sorry that the ablation did not work, that must have been discouraging, particularly since you were in greater pain afterward.
When you say a "synovial ganglion implant" that sounds like more than a shot, is it? I had synovial shots prior to my TKRs and they did help. There are a couple of brands but I found that Synvisc seemed to work best for me, although that could just have been a coincidence, perhaps the doctor or PA administering the shot of the other brand didn't do as good a job.

Certainly, I would not do another TKR without having the allergy testing, it could be fruitless if that's the problem. Is your flex still very low too?
JK